40027-96-1Relevant academic research and scientific papers
Catalytic Asymmetric [4 + 1] Annulation of Sulfur Ylides with Copper-Allenylidene Intermediates
Wang, Qiang,Li, Tian-Ren,Lu, Liang-Qiu,Li, Miao-Miao,Zhang, Kai,Xiao, Wen-Jing
supporting information, p. 8360 - 8363 (2016/07/27)
The first copper-catalyzed asymmetric decarboxylative [4 + 1] cycloaddition of propargylic carbamates and sulfur ylides was successfully developed. This strategy led to a series of chiral indolines with synthetically flexible alkyne groups in good yields and with high enantio- and diastereoselectivities (up to 99% yield, 98% ee, and >95:5 dr). A possible mechanism and stereoinduction mode with copper-allenylidenes were proposed as the possible dipolar intermediate.
Method of preparing a thiophene-containing or furan-containing conjugated compound and precursor compound used therein
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, (2008/06/13)
The invention relates to a method of preparing thiophene-containing or furan-containing conjugated compounds such as polythiophene. The method uses a precursor compound having tetrahydrothiophene or tetrahydrofuran precursor units having arylthio or alkylthio substituents. The precursor units can be thermally converted into thiophene or furan units. Due to the presence of the precursor units the precursor compound is soluble and can, unlike the corresponding conjugated compound, be processed from solution.
A CONVENIENT GENERAL ACCESS TO α-SULFENYLATED ACETOPHENONES AND ALKANONES
Ishibashi, Hiroyuki,Takamuro, Iwao,Mizukami, Yo-ichi,Irie, Maki,Ikeda, Masazumi
, p. 443 - 452 (2007/10/02)
Friedel-Crafts acylation of arenes with methylthio- (1) or phenylthio-acetyl chloride (2) provides ready access to α-methylthio- or α-phenylthio-substituted acetophenones.The acyl chlorides 1 and 2 reacted also with organoaluminium reagents to give α-sulfenylated alkanones.
